document.write( "Question 310369: write in standard form,a+bi.\r
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\n" ); document.write( "\n" ); document.write( "21-3i/1-3i
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Algebra.Com's Answer #221959 by ankor@dixie-net.com(22740)\"\" \"About 
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write in standard form,a+bi.\r
\n" ); document.write( "\n" ); document.write( "\"%2821-3i%29%2F%281-3i%29\"
\n" ); document.write( "Multiply by the conjugate of the denominator over itself
\n" ); document.write( "\"%2821-3i%29%2F%281-3i%29\" * \"%281%2B3i%29%2F%281%2B3i%29\"
\n" ); document.write( "FOIL the numerator and denominators (center terms cancel)
\n" ); document.write( "\"%2821%2B63i-3i-9i%5E2%29%2F%281-9i%5E2%29\" = \"%2821%2B60i-9%28-1%29%29%2F%281-9%28-1%29%29\" = \"%2821%2B60i%2B9%29%2F%281%2B9%29\" = \"%2830%2B60i%29%2F%2810%29\"
\n" ); document.write( "Cancel 10 into 30 and 60 resulting in:
\n" ); document.write( "3 + 6i
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